# Gemini 1.5 Flash API Rate Limits, Pricing & Performance (July 2026)

- Tool: AI API Limits & Performance Matrix
- Last updated: July 2026

## TL;DR

Gemini 1.5 Flash has been shut down and is no longer available via the Google AI API. Gemini 2.0 Flash-Lite was also shut down June 1, 2026. The current replacement is Gemini 2.5 Flash (gemini-2.5-flash): $0.30 input / $2.50 output per MTok, 1M context, free tier (~1,500 RPD), and no long-context surcharge. Migration is typically a one-line model string change.

## Frequently asked questions

### Does Gemini 1.5 Flash still work?

No. Gemini 1.5 Flash has been shut down and is no longer available via the Google AI API. Calls to gemini-1.5-flash return a model-not-found error. The correct replacement is gemini-2.5-flash, which typically requires only a one-line model string change.

### What replaced Gemini 1.5 Flash?

Gemini 2.5 Flash (api_name: gemini-2.5-flash) is the current Flash-tier model. It has the same 1M context window, a free tier (~1,500 RPD approximate), PAYG pricing at $0.30/$2.50 per MTok (raised July 2, 2026), and no long-context surcharge. Gemini 2.0 Flash-Lite was also shut down June 1, 2026 — not a valid migration target.

### How do I migrate from Gemini 1.5 Flash to Gemini 2.5 Flash?

In most cases: change the model string from gemini-1.5-flash to gemini-2.5-flash in your API call or environment variable. The request/response format is compatible. Test in a staging environment first and verify that any system prompts still perform as expected, since model behavior may differ between generations.

### What is the Gemini 2.5 Flash rate limit?

Google no longer publishes a universal RPM or TPM table. Limits are project-specific and shown in your AI Studio console. The free tier has approximately 1,500 requests per day (not guaranteed). PAYG users see higher limits in their project dashboard. To increase limits, submit a quota increase request via Google Cloud Console → IAM & Admin → Quotas.

### Is Gemini 2.5 Flash free?

Yes — there is a free tier via AI Studio with approximately 1,500 requests per day (not a hard published limit). For production, upgrade to PAYG at $0.30/$2.50 per MTok with no minimum spend or subscription fee.

### Gemini 1.5 Flash vs Gemini 2.5 Flash pricing?

Gemini 1.5 Flash pricing is no longer published (model is retired). Gemini 2.5 Flash is priced at $0.30 input / $2.50 output per MTok (as of July 2, 2026). Context cache reads cost $0.03/MTok. Batch API offers 50% off: $0.15/$1.25 per MTok.

### Can RapidDev help me migrate from Gemini 1.5 Flash?

Yes. RapidDev can audit your existing API calls, handle the model string migration, and optimise caching and batching to reduce Gemini 2.5 Flash costs. Reach out at rapidevelopers.com/contact for a free scoping call.

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Source: https://www.rapidevelopers.com/ai-api-limits-performance-matrix/gemini-1-5-flash
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